کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1556024 | 999167 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
A Facile Synthetic Approach to Reduced Graphene Oxide-Fe3O4 Composite as High Performance Anode for Lithium-ion Batteries
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
شیمی مواد
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چکیده انگلیسی
Reduced graphene oxide-Fe3O4 (rGO-Fe3O4) composite has been prepared via a facile and effective hydrothermal method by synthesizing Fe3O4 nanospheres on the planes of reduced graphene oxide (rGO). Characterizations suggest the successful attachment of Fe3O4 nanospheres to rGO sheets. The rGO-Fe3O4 composite (66.7 wt% of Fe3O4 in the composite) exhibits a stable capacity of 668 mAh gâ1 without noticeable fading for up to 200 cycles in the voltage range of 0.001-3.0 V, and the superior performance of rGO-Fe3O4 is clearly established by comparison of the results with those from bare Fe3O4 nanospheres (capacity declined to 117 mAh gâ1 only at the 200th cycle). The excellent electrochemical performance of rGO-Fe3O4 composite can be attributed to the fact that the uniform dispersion of the Fe3O4 nanospheres growing on the rGO sheets avoids aggregation during Li uptake-release cycling, which is desired for cycle stability. Meanwhile, the rGO sheets afford not only elastic buffer to alleviate the volume variations of Fe3O4 nanospheres, but also good ionic and electronic transport medium in the electrode.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Materials Science & Technology - Volume 30, Issue 8, August 2014, Pages 759-764
Journal: Journal of Materials Science & Technology - Volume 30, Issue 8, August 2014, Pages 759-764
نویسندگان
Yanhong Chang, Jing Li, Bin Wang, Hui Luo, Linjie Zhi,